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// $Id: G4ParallelWWnTransportProcess.hh,v 1.4 2003/11/26 14:51:48 gcosmo Exp $
// GEANT4 tag $Name: geant4-08-00 $
//
// ----------------------------------------------------------------------
// Class G4ParallelWWnTransportProcess
//
// Class description:
//
// Used internally by weight window technique in a "parallel" geometry.
// This is a G4ParallelTransport that also does weight window
// sampling in the "parallel" geometry. It is used in case
// the ww is applied only on the paralle boundaries.

// Author: Michael Dressel (Michael.Dressel@cern.ch)
// ----------------------------------------------------------------------
#ifndef G4ParallelWWnTransportProcess_hh
#define G4ParallelWWnTransportProcess_hh G4ParallelWWnTransportProcess_hh

#include "G4ParallelTransport.hh"
#include "G4VTrackTerminator.hh"

class G4SamplingPostStepAction;
class G4VWeightWindowExaminer;
class G4Nsplit_Weight;

class G4ParallelWWnTransportProcess : public G4ParallelTransport,
                                      public G4VTrackTerminator
{

public:  // with description

  G4ParallelWWnTransportProcess(const G4VWeightWindowExaminer 
                                &aWeightWindowExaminer,
                                G4VPGeoDriver &pgeodriver, 
                                G4VParallelStepper &aStepper,
                                const G4VTrackTerminator *TrackTerminator,
                                const G4String &aName = 
                                "ParallelWWnTransportProcess");  
    // initialise G4ParallelTransport and members

  virtual ~G4ParallelWWnTransportProcess();


  virtual G4VParticleChange *PostStepDoIt(const G4Track&,
                                          const G4Step&);
    // do the "parallel transport" and weight window sampling

  virtual void KillTrack() const;
    // used in case no scoring process follows that does the killing

  virtual const G4String &GetName() const;


private:

  G4ParallelWWnTransportProcess(const G4ParallelWWnTransportProcess &);
  G4ParallelWWnTransportProcess &operator=(const G4ParallelWWnTransportProcess &);
  
  virtual void Error(const G4String &m);

private:

  G4ParticleChange *fParticleChange;
  const G4VWeightWindowExaminer &fWeightWindowExaminer;  
  G4SamplingPostStepAction *fPostStepAction;
};

#endif